can you answer me this questions about yasuo

So here is my problems with yasuo

if I manage to get an early kill on him go back and buy a chain vest, he comes back with a dorans blade and outtrades me and wins fights even when behind? why is that. i feel like. armor does so little against him unless you get like 300. sure. i get that his ult reduces armor but his autos. feel like. they do so much damage

here is my second issue. when he dashes. a lot of my autos. end up not connecting. and he Qs and autos from range. meaning that he will end up landing more autos than me. how do I exactly fight against that.

I really have no idea how to lane against good yasuos.

I mean i got a sunfire cape and some how I get outtraded and all he has is a zeal. I play tank ekko top. and I can outtrade every champion. but idk why i can't outtrade a yasuo. at any point of the game until the absolute late game. he just feels. so tanky compared. hell. to even a champion like darius. I feel like yasuo is tankier.

also i can never seem to out cs a yasuo or even stay the same. I played yasuo before and hes one of the easier champion to last hit and waveclear with. again his dash harrass dash stops me from going to last hit most of the time

how do I outtrade a yasuo?